Synthese von 5,6‐Dimethyl‐4‐oxo‐1,3,4,5‐tetrahydro‐imidazo‐[4,5‐ c ] [1,2,6]thiadiazin‐2,2‐dioxid und 7‐Methyl‐4‐oxo‐1 H ‐3,4‐dihydro‐pyrimido[4,5‐ c ][1,2,6]thiadiazin‐2,2‐dioxid

Synthesis of 5,6‐Dimethyl‐4‐oxo‐1,3,4,5‐tetrahydro‐imidazo[4,5‐ c ][1,2,6]thiadiazin 2,2‐dioxide and 7‐Methyl‐4‐oxo‐1 H ‐3,4‐dihydropyrimido[4,5‐ c ][1,2,6]thiadiazin 2,2‐dioxide The derivatives of the above heterocyclic ring systems were prepared by reaction of the corresponding o ‐amino esters with sulfamoylchloride.